Scamper in one-shot mode as well as daemon mode.

Allows scamper to be used in single-shot mode to reduce the "blast radius" when it segfaults.

Paris Traceroute support as a backup

Also add support for using paris-traceroute as a failover option. In this way, we can use scamper (which outputs richer data) until it fails and then use paris-traceroute (which has a much smaller "blast radius" when scamper fails).

Paris-traceroute support

• #45 and #46 add tests and fixes for some newly-discovered race conditions
• #51 adds timeout handling for traceroute calls
• #54 adds support for paris-traceroute as a command-line flag
• #56 improves the Dockerfile to not ship the compiler along with the compiled binaries

Deadlock found and fixed, some log cleanup

This release contains the following updates:

• #42 Log cleanup
• #43 Found and fixed a deadlock bug in ipcache.

minor lint fix

Will be pushed to prod with this verison

Fix bugs introduced by ss and ipcache

#40

Fix possible bugs introduced by connectionlistener code

#39

fix bug on GetData

#34

call ss from service & implement cached test

#31 #33

Add version number to meta line

Merge pull request #26 from m-lab/add-version

add version to meta line besides uuid